Physics

posted by .

On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 25deg west of north. Your average velocity is 2.0 m/s in the same direction as the displacement.
Calculate (a) your walking time and (b) your average speed.

  • Physics -

    Magnitude of displacement (vector)
    =290m
    velocity=2.0m/s

    (a)
    Walking time = distance /speed
    = 290m / 2.0m/s
    = 145s

    (b)
    Northerly distance
    = 290cos(25°)
    = 262.8m
    Westerly distance
    = 290sin(25°)
    = 122.6m
    Total distance
    = 385.4m
    Average speed
    = 385.4m / 145s
    = 2.66 m/s

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    In wandering, a grizzly bear makes a displacement of 1588 m due west, followed by a displacement of 3390 m in a direction 38.0° north of west. What are the magnitude and the direction of the displacement needed for the bear …
  2. Physics

    A crow flies in two successive displacements to a point that is 80 m to the west. Its first displacement is 80 m in a direction θ = 50° west of north. What is the magnitude of its second displacement?
  3. Physics

    At one instant a bicyclist is 50 m due east of a park's flagpole, going due south with a speed of 18 m/s. Then, 13 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 13 m/s. For the cyclist in this …
  4. Physics 1

    A bird watcher meanders through the woods, walking 0.45 km due east, 0.80 km due south, and 2.05 km in a direction 43.0° north of west. The time required for this trip is 2.50 h. (a) Determine the magnitude and direction (relative …
  5. Physics

    A car travels 20.2 km due north and then 31.3 km in a direction φ = 61.2◦ west of north. Find the magnitude of the car’s resultant displacement. Then Calculate the direction of the car’s resultant displacement, measured …
  6. Physics

    On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 250 west of north. Your average velocity is 2.0 m/s in the same direction as the displacement. Calculate (a) your walking …
  7. physics

    A line directed to the west. A plane flies 20 degrees north of that direction ( 90 degrees north of that direction would be north..) if the plane flies for 340 km, determine its displacement toward the west and its displacement toward …
  8. Physics

    A man in search of his dog drives first 13.3 mi northeast, then 17.3 mi straight south, and finally 6.85 mi in a direction 30.3° north of west. 1. a) What is the magnitude of his resultant displacement?
  9. Physics

    A man in search of his dog drives first 13.3 mi northeast, then 17.3 mi straight south, and finally 6.85 mi in a direction 30.3° north of west. a) What is the magnitude of his resultant displacement?
  10. physics

    Multiple Concept Example 9 provides background pertinent to this problem. The magnitudes of the four displacement vectors shown in the drawing are A = 17.0 m, B = 10.0 m, C = 11.0 m, and D = 23.0 m. Determine the (a) magnitude and …

More Similar Questions